Sealoc Outdoor TV mounts are the only mounts that are made in the USA with 316 Stainless Steel. These Mounts are made to last for life without any corrosion. All Sealoc Mounts are made by hand as they are ordered. Sealoc Mounts are made for many reasons, as to hotel, bars and restaurants that need this protection. All it takes is one fall of a TV from a mount giving out over time due to corrosion for a person to sue the company. Sealoc Mounts will never corrode or give out, Sealoc Mounts are the last mount you will ever purchase for that outdoor TV. All Sealoc mounts are fully made with 316 Stainless Steel that is aerospace used material and used mostly on the oceans.
Stainless steels are notable for their corrosion resistance, which increases with increasing chromium content. Molybdenum additions increase corrosion resistance in reducing acids and against pitting attack in chloride solutions. Thus, there are numerous grades of stainless steel with varying chromium and molybdenum contents to suit the environment the alloy must endure. Thus stainless steels are used where both the strength of steel and corrosion resistance are required.
Stainless steel’s resistance to corrosion and staining, low maintenance, and familiar lustre make it an ideal material for many applications. Stainless steels are rolled into sheets, plates, bars, wire, and tubing
Stainless steels do not suffer uniform corrosion, like carbon steel, when exposed to wet environments. Unprotected carbon steel rusts readily when exposed to the combination of air and moisture. The resulting iron oxide surface layer (the rust) is porous and fragile. Since iron oxide occupies a larger volume than the original steel this layer expands and tends to flake and fall away exposing the underlying steel to further attack. In comparison, stainless steels contain sufficient chromium to undergo passivation, spontaneously forming a microscopically thin inert surface film of chromium oxide by reaction with the oxygen in air and even the small amount of dissolved oxygen in water. This passive film prevents further corrosion by blocking oxygen diffusion to the steel surface and thus prevents corrosion from spreading into the bulk of the metal. This film is self-repairing if it is scratched or temporarily disturbed by an upset condition in the environment that exceeds the inherent corrosion resistance of that grade.
However, stainless steels may suffer uniform corrosion when exposed to acidic or basic solutions. Whether a stainless steel corrodes depends on the kind and concentration of acid or base, and the solution temperature. Uniform corrosion is typically easy to avoid because of extensive published corrosion data or easy to perform laboratory testing.
Unfortunately, stainless steels are susceptible to localized corrosion under certain conditions, which need to be recognized and avoided. Such localized corrosion is problematic for stainless steels because it is unexpected and more difficult to predict.
Acidic solutions can be categorized into two general categories, reducing acids such as hydrochloric acid and dilute sulfuric acid, and oxidizing acids such as nitric acid and concentrated sulfuric acid. Increasing chromium and molybdenum contents provide increasing resistance to reducing acids, while increasing chromium and silicon contents provide increasing resistance to oxidizing acids.
Sulfuric acid is the largest tonnage industrial chemical manufactured. At room temperature Type 304 is only resistant up to 3% acid while Type 316 is resistant up to 50oC and up to 20% acid at room temperature. Thus Type 304 is rarely used in contact with sulfuric acid. Type 904 and Alloy 20 are resistant to sulfuric acid at even higher concentrations above room temperature.
All types of stainless steel resist attack from phosphoric acid and nitric acid at room temperature. At high concentration and elevated temperature attack will occur and higher alloy stainless steels are required.  Concentrated sulfuric acid possesses oxidizing characteristics like nitric acid and thus silicon bearing stainless steels also find application.
In general, organic acids are less corrosive than mineral acids such as hydrochloric and sulfuric acid. As the molecular weight of organic acids increase their corrosivity decreases. Formic acid has the lowest molecular weight and is a strong acid. Type 304 can be used with formic acid though it will tend to discolor the solution. Acetic acid is probably the most commercially important of the organic acids and Type 316 is commonly used for storing and handling acetic acid.
Stainless steels have a long history of application in contact with water due to their excellent corrosion resistance. Applications include a range of conditions from plumbing, potable and waste water treatment to desalination. Types 304 and 316 stainless steels are standard materials of construction in contact with water. However, with increasing chloride contents higher alloyed stainless steels such as Type 2205 and super austenitic and super duplex stainless steels are utilized.
Important considerations to achieve optimum corrosion performance are:
- choose the correct grade for the chloride content of the water;
- avoid crevices when possible by good design;
- follow good fabrication practices, particularly removing weld heat tint;
- drain promptly after hydrotesting.
For more information contact Sealoc to see if the Sealoc Outdoor TV mount is right for you.